The figures, revealed this week in the COI's annual report, also show COI newsdesk spending accounted for an additional £22.8m, up from the previous year's spend of £17.8m.
The figures are included in an overall Government spend of £531m on marketing and comms through the COI, down £9m on the previous year.
Digital marketing expenditure rose ten per cent to £44m.
The figures reflect the combined spend of government departments and public sector bodies that used the COI's services during 2009/10.
A freeze has since been placed on government advertising and marketing spend by the new Government, with only essential new and existing campaigns being allowed to continue.
COI chief executive Mark Lund said: 'The COI must play its part in helping reduce the deficit. This year we are more focused than ever on achieving outcomes at a much lower cost. We anticipate more partnerships with brand owners, media owners and civic groups, as well as increasingly innovative approaches to joining up paid-for and other media channels.'
The COI is undergoing a period of consultancy that could end in redundancies.